Ancistrogobius yoshigoui Shibukawa, Yoshino & Allen, 2010
Threadless cheek-hook goby
photo by Ryanskiy, A.

 Family:  Gobiidae (Gobies), subfamily: Gobiinae
 Max. size:  4.06 cm SL (male/unsexed)
 Environment:  benthopelagic; depth range 5 - 30 m
 Distribution:  Western Pacific: Japan, Philippines, Indonesia and Papua New Guinea.
 Diagnosis:  Dorsal spines (total): 7-7; Dorsal soft rays (total): 9-10; Anal spines: 1-1; Anal soft rays: 9-9. This species is unique from its congeners by having the following characters: lacks a filamentous spine on the first dorsal fin (the third spine subequal in length to preceding spine); 19-20, typically 20 pectoral-fin rays; head and most of nape no scales, predorsal scales absent; pelvic fins fused medially with well developed connecting membrane and frenum; fifth segmented ray of pelvic fin 91.8-94.9% of preceding ray in length; below the eye faint, dusky blotches (not forming vertical bar); distal tip of first dorsal fin with a black blotch, wide, extending posteriorly to middle or more posterior part of third interspinal membrane; sensory papilla rows x^1 and x^2 not continuous, interrupted by row trp; sensory papilla rows trp extending dorsally to slightly above a longitudinal line through rows x^1 + x^2; anterior tip of sensory papilla row b extending or not to row 4 and well apart from row (Ref. 84001).
 Biology:  Collected from sandy-mud or silt bottoms at depths of 5-30 m (Ref. 84001).
 IUCN Red List Status: Not Evaluated  (Ref. 96402)
 Threat to humans:  harmless
 Country info:   
 

 Entered by: Capuli, Estelita Emily - 21.04.10
 Modified by: Valdestamon, Roxanne Rei - 19.04.13

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